<?php

class Home_Model extends Model {
    
    protected $id;
    protected $b;
    protected $columns = array(
	'id',
	'b'
    );
    
    public function set_id($id)
    {
	$this->id = $id;
    }

    public function set_b($b)
    {
	$this->b = $b;
    }
    
}